Frame Structure and CT Equipment

Abstract

The present invention provides a frame structure and a CT device. The frame structure includes: a housing; and a frame assembly disposed within the housing; the frame assembly includes a fixed frame and a rotating frame, the fixed frame having a first air cavity and a second air cavity formed by partitioning the housing along the axial direction; the rotating frame is rotatably mounted on the fixed frame, the rotating frame having ventilation holes that communicate the first air cavity and the second air cavity on both sides of the rotating frame. The first air cavity, the ventilation holes, and the second air cavity are arranged along the axial direction, enabling air flow to enter the rotating frame along the axial direction and cool the electrical components on the rotating frame, so that the air flow can effectively cool the electrical components, ensure good temperature field uniformity in the fixed frame, avoid affecting the performance of the detector, and ensure the imaging effect of the image; at the same time, the overall height of the CT device can also be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of imaging devices, and particularly to a frame structure and a CT device. Background Art

[0002] For current CT devices, electrical components such as an X-ray tube, a high-voltage generator, and a detector are installed on a rotating support structure. Among them, high-power components such as the X-ray tube and the high-voltage generator generate a large amount of heat during operation, and the performance of the detector is sensitive to temperature. Since the support structure rotates within the device housing during operation, the detector is vulnerable to the influence of heat sources such as the X-ray tube. The high and unstable operating temperature within the device housing can affect the performance of the detector, resulting in image artifacts and affecting the imaging quality. Summary of the Invention

[0003] Based on this, it is necessary to provide a frame structure and a CT device that can ensure the performance of the detector by reducing the temperature in view of the problem that the working temperature in the current device housing is high and unstable, affecting the performance of the detector.

[0004] The above object is achieved by the following technical solutions:

[0005] A frame structure includes:

[0006] A housing; and

[0007] A frame assembly disposed within the housing; the frame assembly includes a fixed frame and a rotating frame. The fixed frame has a first air chamber and a second air chamber formed by separating the housing in the axial direction. The rotating frame is rotatably mounted on the fixed frame and has ventilation holes that communicate the first air chamber and the second air chamber on both sides of the rotating frame.

[0008] In one embodiment, the rotating frame includes an annular cylinder and a mounting plate disposed on the annular cylinder. The annular cylinder is rotatably mounted on the fixed frame, and the ventilation holes penetrate the mounting plate in the axial direction.

[0009] In one embodiment, the number of the ventilation holes is multiple, and the multiple ventilation holes are respectively arranged corresponding to the electrical components mounted on the rotating frame.

[0010] In one embodiment, the frame structure further includes an exhaust component that is axially disposed in the second air chamber, and the exhaust component is used to accelerate the air flow in the fixed frame.

[0011] In one embodiment, the fixed frame and the rotating frame enclose an air guiding cavity, the air guiding cavity is located between the rotating frame and the first air cavity and / or the second air cavity, and the air guiding cavity communicates the ventilation holes with the first air cavity or the second air cavity.

[0012] In one embodiment, the frame structure further includes a partition plate. The outer shell covers the fixed frame. The partition plate is disposed on the outer shell and extends to the peripheral surface of the fixed frame. The partition plate is used to isolate the first air cavity from the second air cavity.

[0013] In one embodiment, the frame structure further includes a rotary seal assembly. The rotary seal assembly is rotatably connected to the rotating frame and the fixed frame and seals the connection between the rotating frame and the fixed frame.

[0014] In one embodiment, the rotary seal assembly includes a first mating portion and a second mating portion arranged in a ring shape. The first mating portion is disposed on the rotating frame, and the second mating portion is disposed on the fixed frame. The first mating portion and the second mating portion are rotatably engaged and seal the rotating frame and the fixed frame.

[0015] In one embodiment, the first mating portion and the second mating portion are in a convex and concave mating;

[0016] Alternatively, both the first mating portion and the second mating portion are convex, and the first mating portion and the second mating portion are arranged in an interleaved manner.

[0017] In one embodiment, the number of the first mating portions and the second mating portions is multiple. The multiple first mating portions are arranged at intervals in the radial direction of the rotating frame, and the multiple second mating portions are respectively engaged with the corresponding first mating portions.

[0018] In one embodiment, the frame structure further includes a guiding member. The guiding member is located in the first air cavity and / or the second air cavity and is disposed corresponding to the rotating frame. The guiding member is used to convey and / or output air flow to the rotating frame.

[0019] A CT device includes electrical components and the frame structure according to any one of the above technical features. The electrical components at least include an X-ray tube and a detector. The X-ray tube and the detector are symmetrically disposed on the rotating frame of the frame structure. The X-ray tube is used to emit X-rays, and the detector is used to receive the X-rays.

[0020] After adopting the technical solution of the above embodiment, the present invention has at least the following technical effects:

[0021] The frame structure of the present invention and the CT device. After the rotating frame is arranged behind the fixed frame, the first air chamber and the second air chamber are respectively located on both sides of the ventilation hole, and the first air chamber and the second air chamber are communicated through the ventilation hole, that is, the first air chamber, the ventilation hole and the second air chamber are arranged along the axial direction. In this way, when the air flow, it can flow between the first air chamber, the ventilation hole and the second air chamber along the axial direction, realizing that the air flow enters the rotating frame along the axial direction and cools the electrical components on the rotating frame, effectively solving the problem that the working temperature in the current equipment shell is high and unstable, which affects the performance of the detector, enabling the air flow to effectively cool the electrical components, ensuring good uniformity of the temperature field in the fixed frame, avoiding affecting the performance of the detector, and ensuring the imaging effect of the image. At the same time, the arrangement of the first air chamber, the ventilation hole and the second air chamber along the axial direction can also reduce the overall height of the CT device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front view structural schematic diagram of the frame structure according to an embodiment of the present invention;

[0023] Figure 2 is Figure 1 a side view structural schematic diagram of the frame structure shown;

[0024] Figure 3 is Figure 1 a front view structural schematic diagram of the rotating frame in the frame structure shown;

[0025] Figure 4 is Figure 3 a perspective view of the rotating frame shown from another angle;

[0026] Figure 5 is a side view structural schematic diagram of the frame structure according to another embodiment of the present invention;

[0027] Figure 6 is Figure 5 a rear view structural schematic diagram of the frame structure shown;

[0028] Figure 7 is Figure 6 a partial enlarged view of the connection between the rotating frame and the fixed frame in the frame structure shown;

[0029] Figure 8 is a side view structural schematic diagram of the frame structure according to still another embodiment of the present invention;

[0030] Figure 9 is a side view structural schematic diagram of the frame structure according to the fourth embodiment of the present invention.

[0031] Wherein: 100, frame structure; 110, fixed frame; 111, first air chamber; 112, second air chamber; 113, outer shell; 114, support base; 115, fixed part; 120, rotating frame; 121, annular cylinder; 122, mounting plate; 1221, ventilation hole; 123, annular inner cylinder; 124, reinforcing rib; 130, rotating seal assembly; 131, first mating part; 132, second mating part; 140, exhaust component; 150, air guiding chamber; 160, partition plate; 170, guiding member. Detailed implementation manners

[0032] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0038] See Figure 1 , the present invention provides a frame structure 100. The frame structure 100 is applied to a CT (computed tomography) device and serves as the outer shell 113 of the CT device. The frame decoupling section is used to carry and support each component of the CT device. Specifically, the frame structure 100 can support the electrical components of the CT device. Optionally, the electrical components at least include an X-ray tube and a detector. The CT device can image a target area to be photographed. Optionally, the target can be a patient, and the area to be photographed can be the lesion location of the patient.

[0039] See Figure 1 and Figure 2 , in an embodiment, the frame structure 100 includes an outer shell 113 and a frame assembly, and the frame assembly is disposed within the outer shell 113. The frame assembly includes a fixed frame 110 and a rotating frame 120. The fixed frame 110 axially divides the outer shell 113 to form a first air cavity 111 and a second air cavity 112. The rotating frame 120 is rotatably mounted in the fixed frame 110, and the rotating frame 120 has ventilation holes 1221, and the ventilation holes 1221 communicate the first air cavity 111 and the second air cavity 112 on both sides of the rotating frame 120.

[0040] The frame assembly is the supporting main body of the CT device, used to support each component of the CT device. Moreover, the frame assembly is installed on a reference plane, usually the ground. The outer shell 113 covers the outside of the frame assembly, used to wrap the frame assembly, playing a protective role, preventing the components in the frame assembly from being exposed, and ensuring the safety of use. The outer shell 113 is a hollow structure, and the hollow part of the outer shell 113 can form an installation space, and each component of the CT device is installed in the outer shell 113.

[0041] The fixed frame 110 plays a supporting role. Usually, the fixed frame 110 is installed on the ground, used to support the CT device on the ground, and realize the installation and use of the CT device. The structural form of the fixed frame 110 is not restricted in principle, as long as it can be installed on the ground. Exemplarily, the fixed frame 110 includes a support plate in contact with the ground and support columns arranged on both sides of the support plate. The support columns protrude from the surface of the support plate and are in contact with the outer shell 113 to realize the support of the outer shell 113.

[0042] Optionally, the fixed frame 110 divides the first air cavity 111 and the second air cavity 112 formed by the outer shell 113 along the axial direction. That is to say, after the fixed frame 110 is arranged in the outer shell 113, the fixed frame 110 is located in the hollow chamber of the outer shell 110, and the chamber in the outer shell 113 is divided into the first air cavity 111 and the second air cavity 112. Exemplarily, as Figure 2 shown, the fixed frame 110 is located in the middle area of the outer shell 113, and the left side of the fixed frame 110 is the first air cavity 111, and the right side of the fixed frame 110 is the second air cavity 112.

[0043] The flow of air in the fixed frame 110 is realized through the first air cavity 111 and the second air cavity 112 to cool the electrical components of the CT device, reduce the temperature of the electrical components, and make the temperature field uniformity in the fixed frame 110 good. Exemplarily, as Figure 1 shown, the first air cavity 111 is on the left side and the second air cavity 112 is on the right side. The first air cavity 111 and the second air cavity 112 are used to realize the inflow and outflow of air in the fixed frame 110.

[0044] Optionally, the fixed frame 110 has a first air inlet / outlet connected to the first air cavity 111, and the air flow interaction between the external environment and the first air cavity 111 is realized through the first air inlet / outlet. Optionally, the first air inlet / outlet can be arranged on the peripheral side or the end face of the fixed frame 110. That is to say, the first air inlet / outlet can be arranged in the radial direction or the axial direction. Optionally, the number of the first air inlet / outlets can be one, as long as the air flow in and out of the first air cavity 111 can be realized. Of course, the number of the first air inlet / outlets can also be at least two, and the at least two first air inlet / outlets are arranged at intervals, which can improve the air flow efficiency in and out of the first air cavity 111 and ensure the heat dissipation effect.

[0045] Optionally, the fixed frame 110 has a second air inlet / outlet connected to the second air cavity 112, and the air flow interaction between the external environment and the second air cavity 112 is realized through the second air inlet / outlet. Optionally, the second air inlet / outlet can be arranged on the peripheral side or the end face of the fixed frame 110. That is to say, the second air inlet / outlet can be arranged in the radial direction or the axial direction. Optionally, the number of the second air inlet / outlets can be one, as long as the air flow in and out of the second air cavity 112 can be realized. Of course, the number of the second air inlet / outlets can also be at least two, and the at least two second air inlet / outlets are arranged at intervals, which can improve the air flow efficiency in and out of the second air cavity 112 and ensure the heat dissipation effect.

[0046] The rotating frame 120 is located in the housing 113 and is rotatably connected to the support base 114. The rotating frame 120 can rotate relative to the support base 114 in the housing 113. Optionally, the rotation center of the rotating frame 120 coincides with the rotation of the housing 113, which can avoid the interference between the rotating frame 120 and the inner wall of the housing 113, ensure the smooth rotation of the rotating frame 120, and further ensure the reliability of the imaging process of the CT device. Moreover, electrical components such as an X-ray tube and a detector for installing the CT device are arranged on the rotating frame 120. The rotating frame 120 can drive the electrical components to rotate synchronously to realize the imaging function of the CT device.

[0047] Optionally, the rotating frame 120 is located between the first air chamber 111 and the second air chamber 112. That is to say, the first air chamber 111 and the second air chamber 112 are located on both sides of the rotating frame 120. Of course, in other embodiments of the present invention, the first air chamber 111 and the second air chamber 112 may also be located on the same side of the rotating frame 120. In the present invention, only the example where the first air chamber 111 and the second air chamber 112 are located on both sides of the rotating frame 120 is used for illustration. The rotating frame 120 is located in the middle area of the fixed frame 110, that is, the first air chamber 111, the rotating frame 120, and the second air chamber 112 are arranged along the axial direction. This can reduce the size of the fixed frame 110 in the radial direction, and further reduce the overall volume of the CT device, which is beneficial to the miniaturization design of the CT device. Optionally, the rotating frame 120 is located between the first air chamber 111 and the second air chamber 112.

[0048] The rotating frame 120 is provided with ventilation holes 1221, and the ventilation holes 1221 communicate the first air chamber 111 and the second air chamber 112, so that air flow can axially flow in the fixed frame 110. The axially flowing air flow can take away the heat generated by the electrical components on the rotating frame 120, reduce the temperature of the electrical components, and further reduce the temperature in the fixed frame 110, ensure the heat dissipation efficiency, make the temperature field uniformity in the fixed frame 110 good, and will not generate too high temperature. In this way, the detector will not be affected by high temperature, the imaging effect can be guaranteed, and the image imaging accuracy can be improved. Optionally, the rotating frame 120 is rotatably installed in the fixed frame 110 through bearings to ensure the smooth rotation of the rotating frame 120.

[0049] For the frame structure 100 of the above embodiment, the first air chamber 111, the ventilation holes 1221, and the second air chamber 112 are arranged along the axial direction. In this way, when the air flow flows, it can flow between the first air chamber 111, the ventilation holes 1221, and the second air chamber 112 along the axial direction, realizing the axial entry of the air flow into the rotating frame 120 and cooling the electrical components on the rotating frame 120, effectively solving the problem that the working temperature in the current equipment housing is high and unstable, which affects the performance of the detector, enabling the air flow to effectively cool the electrical components, ensuring the good temperature field uniformity in the fixed frame 110, avoiding affecting the performance of the detector, and ensuring the imaging effect of the image. At the same time, the arrangement of the first air chamber 111, the ventilation holes 1221, and the second air chamber 112 along the axial direction can also reduce the overall height of the CT device.

[0050] In one embodiment, one of the first air chamber 111 and the second air chamber 112 is an air inlet chamber, and the other is an air outlet chamber. That is to say, when one of them conveys air flow to the rotating frame 120 to cool the rotating frame 120 and the electrical components thereon, the other correspondingly outputs the cooled air flow.

[0051] In one embodiment, when the first air chamber 111 is the air inlet chamber, correspondingly, the second air chamber 112 is the air outlet chamber. As Figure 2 shown, the external air flow enters the first air chamber 111 through the first air inlet and outlet, so as to cool the rotating frame 120 and the electrical components thereon. After cooling the rotating frame 120, the air flow enters the second air chamber 112 through the ventilation holes 1221, and then flows out of the fixed frame 110 through the second air inlet and outlet.

[0052] In another embodiment, when the first air chamber 111 is the air outlet chamber, correspondingly, the second air chamber 112 is the air inlet chamber. As Figure 9 shown, the external air flow enters the second air chamber 112 through the second air inlet and outlet, and enters the rotating frame 120 through the ventilation holes 1221, so as to cool the rotating frame 120 and the electrical components thereon. After cooling the rotating frame 120, the air flow enters the first air chamber 111, and then flows out of the fixed frame 110 through the first air inlet and outlet.

[0053] It should be noted that, for the convenience of description hereinafter, the first air chamber 111 is used as the air inlet chamber and the second air chamber 112 is used as the air outlet chamber for description, unless otherwise specifically defined.

[0054] Referring to Figure 1 、 Figure 3 and Figure 4 , in one embodiment, the rotating frame 120 includes an annular cylinder 121 and a mounting plate 122 provided at one end of the annular cylinder 121. The annular cylinder 121 is rotatably mounted on the fixed frame 110, and the ventilation holes 1221 penetrate through the mounting plate 122 in the axial direction. The annular cylinder 121 is a hollow structure, and electrical components such as an X-ray tube and a detector are installed in the annular cylinder 121. The annular cylinder 121 is rotatably mounted on the fixed frame of the fixed frame 110 and is located in the housing 113 of the fixed frame 110. It is worth noting that regarding the size of the ventilation opening, the size of the ventilation opening will be determined by means of simulation experiments and the like during actual setting to meet the heat dissipation requirements of the CT device.

[0055] The mounting plate 122 is located at the end face of the annular cylinder 121. On the one hand, the mounting plate 122 can facilitate the installation of electrical components. On the other hand, the mounting plate 122 can also separate the first air chamber 111 from the second air chamber 112. After the ventilation holes 1221 penetrate through the mounting plate 122 in the axial direction, the ventilation holes 1221 connect the first air chamber 111 and the second air chamber 112 on both sides of the rotating frame 120. That is to say, the air flow between the first air chamber 111 and the second air chamber 112 can only be realized through the ventilation holes 1221. In this way, the air flow can fully cool the electrical components in the annular cylinder 121 and cool the annular cylinder 121, improve the cooling effect, and effectively reduce the temperature in the fixed frame 110.

[0056] Optionally, the rotating frame 120 further includes an annular inner cylinder 123, which is also a hollow structure, and the annular cylinder 121 is sleeved outside the annular inner cylinder 123 to form a double-layer structure. The space of the double-layer structure, that is, the space between the annular inner cylinder 123 and the annular cylinder 121, is used to install electrical components such as an X-ray tube, a detector, a high-voltage device, and a collimator. Optionally, both the annular cylinder 121 and the annular inner cylinder 123 have a certain length in the axial direction to increase the strength and stiffness of the rotating frame 120, facilitate the support of the X-ray tube and the detector, etc., and make the annular cylinder 121 and the annular inner cylinder 123 not easily deformed, ensuring reliable support.

[0057] Optionally, the rotating frame 120 further includes reinforcing ribs 124, which are arranged on the mounting plate 122 and / or the annular cylinder 121 to improve the strength of the rotating frame 120. Further, the reinforcing ribs 124 connect the mounting plate 122, the annular cylinder 121, and the annular inner cylinder 123 to further improve the strength and stiffness of the rotating frame 120, ensure that the rotating frame 120 reliably supports the X-ray tube and the detector, etc., guarantee the performance of the rotating frame 120, and further ensure the reliability of the operation of the CT device.

[0058] In one embodiment, the number of ventilation holes 1221 is multiple, and the multiple ventilation holes 1221 are respectively arranged corresponding to the electrical components on the rotating frame 120. It can be understood that the electrical components at least include an X-ray tube, a detector, a high-voltage device, a collimator, etc., and each device corresponds to one ventilation hole 1221. In this way, the air flow in the first air cavity 111 can directly enter the second air cavity 112 through the corresponding ventilation hole 1221 after flowing through the electrical components, which can avoid the mixing of air flows, ensure the air flow moves in the axial direction, and reduce the temperature in the fixed frame 110.

[0059] Moreover, the multiple ventilation holes 1221 are non-uniformly distributed on the mounting plate 122 of the rotating frame 120. This is because the various devices of the electrical components are non-uniformly distributed, and the ventilation holes 1221 correspond to each device one by one to ensure the heat dissipation effect. Optionally, there is a certain distance between adjacent ventilation holes 1221. That is to say, the ventilation holes 1221 are independently arranged to avoid the mixing of air flows and ensure the heat dissipation effect.

[0060] Optionally, the diameter of each ventilation hole 1221 meets the heat dissipation requirements of the corresponding electrical component. That is, the ventilation hole 1221 with an appropriate diameter is selected according to the heat generated by the electrical component during operation. Exemplarily, a device with a large heat dissipation uses a ventilation hole 1221 with a larger diameter; a device with a smaller heat dissipation uses a ventilation hole 1221 with a smaller diameter. Optionally, the diameter sizes of the ventilation holes 1221 are the same and / or different. That is, the diameter sizes of the ventilation holes 1221 are the same; alternatively, the diameter sizes of the ventilation holes 1221 are different; or some of the ventilation holes 1221 have the same diameter size and some have different diameter sizes.

[0061] See Figure 5 , in an embodiment, the frame structure 100 further includes an exhaust component 140. The exhaust component 140 is disposed in the second air cavity 112 along the axial direction. The exhaust component 140 is used to accelerate the air flow in the fixed frame 110. It can be understood that since the air cavities in the fixed frame 110 are interconnected, after the exhaust component 140 is disposed in the second air cavity 112, the exhaust component 140 can accelerate the air flow, improve the air flow velocity in each air cavity of the fixed frame 110, especially improve the air flow velocity in the second air cavity 112, and improve the heat dissipation effect. Moreover, the exhaust component 140 is disposed in the second air cavity 112 along the axial direction, which can reduce the radial dimension of the fixed frame 110, and further reduce the height dimension of the frame structure 100, thereby reducing the height of the CT device.

[0062] When the second air cavity 112 is an air outlet cavity, the exhaust component 140 is used to discharge the air flow in the second air cavity 112 and extract the air flow in the first air cavity 111, accelerating the cooling of the electrical components and the rotating frame 120 by the air flow and improving the heat dissipation effect. When the second air cavity 112 is an air inlet cavity, the exhaust component 140 is used to suck the external air flow into the second air cavity 112 and send the air flow into the first air cavity 111, accelerating the cooling of the electrical components and the rotating frame 120 by the air flow and improving the heat dissipation effect.

[0063] Optionally, the exhaust component 140 is a fan. By using the fan to accelerate the air flow, it is convenient for the air flow in the second air cavity 112 and improves the heat dissipation effect. Further, the fan includes but is not limited to an axial flow fan, and can also be other types of fans, such as a turbo fan, etc.

[0064] See Figure 5 and Figure 6, in one embodiment, the fixed frame 110 and the rotating frame 120 enclose an air guiding cavity 150. The air guiding cavity 150 is located between the rotating frame 120 and the first air cavity 111 and / or the second air cavity 112. The air guiding cavity 150 communicates the ventilation hole 1221 with the first air cavity 111 or the second air cavity 112. The air guiding cavity 150 is used to achieve the convergence of air flow. It can be understood that the rotating frame 120 is located behind the fixed frame 110, and the air guiding cavity 150 is enclosed between the side surface of the rotating frame 120 and the inner wall of the fixed frame 110 to guide the air flow through the air guiding cavity 150.

[0065] Optionally, the air guiding cavity 150 can be arranged between the first air cavity 111 and the rotating frame 120, or between the second air cavity 112 and the rotating frame 120, or can be arranged both between the first air cavity 111 and the rotating frame 120 and between the second air cavity 112 and the rotating frame 120.

[0066] Optionally, the fixed frame 110 further has a protruding air guiding portion, and the air guiding portion encloses the air guiding cavity 150. Of course, in other embodiments of the present invention, an air guiding shell can also be arranged in the fixed frame 110. The air guiding shell communicates the ventilation hole 1221 with the first air cavity 111 or the second air cavity 112, and the space inside the air guiding shell is the air guiding cavity 150.

[0067] This embodiment only takes the case where the air guiding cavity 150 is arranged between the rotating frame 120 and the second air cavity 112 as an example for illustration. Moreover, the second air cavity 112 is an air outlet cavity. The situation where the air guiding cavity 150 is arranged at other positions and the second air cavity 112 is an air inlet cavity is substantially the same as this embodiment and will not be elaborated here one by one.

[0068] Specifically, the rotating frame 120, the air guiding cavity 150 and the second air cavity 112 are arranged in sequence along the axial direction, which can reduce the radial dimension of the frame structure 100 and further reduce the height of the CT device. The air flow in the ventilation hole 1221 is communicated with the second air cavity 112 through the air guiding cavity 150. The air guiding cavity 150 can achieve the convergence of the air flow output from the ventilation hole 1221, convey the air flow to the second air cavity 112, and then the second air cavity 112 outputs the air flow.

[0069] It can be understood that the frame structure 100 includes an air guiding plate. The air guiding plate is arranged in the frame housing 113 and surrounds the side surface of the rotating frame 120 so that the air guiding plate encloses the air guiding cavity 150. By enclosing the air guiding cavity 150 with the air guiding plate, it is convenient for the air flow for cooling electrical components to converge in the air guiding cavity 150 and enter the second air cavity 112 to avoid turbulent flow.

[0070] See Figure 8, in one embodiment, the frame structure 100 further includes a partition plate 160. The partition plate 160 is disposed on the inner wall of the fixed frame 110 and extends to the circumferential surface of the rotating frame 120. The partition plate 160 is used to isolate the first air cavity 111 from the second air cavity 112. The partition plate 160 is disposed on the inner wall of the fixed frame 110 and extends in the direction of the rotating frame 120. Moreover, there is a gap between the end of the partition plate 160 away from the fixed frame 110 and the rotating frame 120, avoiding interference between the partition plate 160 and the rotating frame 120 and ensuring the smooth rotation of the rotating frame 120.

[0071] After the partition plate 160 is disposed on the fixed frame 110, the partition plate 160 can separate the first air cavity 111 from the second air cavity 112, preventing the airflows in the first air cavity 111 and the second air cavity 112 from mixing, so that the airflow must pass through the electrical components to flow between the first air cavity 111 and the second air cavity 112, ensuring the cooling effect. Optionally, the partition plate 160 is detachably installed in the fixed frame 110. Of course, in other embodiments of the present invention, the first air cavity 111 and the second air cavity 112 can be separated by a wind guide plate, or the fixed frame 110 itself can form a structure to separate the first air cavity 111 and the second air cavity 112.

[0072] Of course, in other embodiments of the present invention, the fixed frame 110 and the housing can be set in a sealed manner, that is, there is no need to provide a partition plate 160, and the first air cavity 111 and the second air cavity 112 are ensured by the sealed manner. Exemplarily, the frame structure 100 further includes a rotary seal assembly 130. The rotary seal assembly 130 is rotatably connected to the rotating frame 120 and the fixed frame 110 and seals the connection between the rotating frame 120 and the fixed frame 110.

[0073] The rotary seal assembly 130 is used to ensure the sealing performance of the connection between the rotating frame 120 and the fixed frame 110, preventing the airflows in the first air cavity 111 and the second air cavity 112 from flowing through the connection between the rotating frame 120 and the fixed frame 110, improving the utilization rate of the airflow, and ensuring the cooling effect. Specifically, part of the rotary seal assembly 130 is installed on the rotating frame 120, and part is installed on the fixed frame 110. The two positions are aligned to form a rotary seal structure, restricting the airflow at this position. Of course, in other embodiments of the present invention, the rotary seal assembly 130 can also be an aligned structure formed by the self-structures on the rotating frame 120 and the fixed frame 110.

[0074] See Figure 5 and Figure 7, in one embodiment, the rotary seal assembly 130 includes a first mating portion 131 and a second mating portion 132 arranged in a ring shape. The first mating portion 131 is disposed on the rotary frame 120, and the second mating portion 132 is disposed on the fixed frame 110. The first mating portion 131 and the second mating portion 132 are rotatably engaged and seal the rotary frame 120 and the fixed frame 110. After the rotary frame 120 is installed on the fixed frame 110, the first mating portion 131 of the rotary frame 120 mates with the second mating portion 132 of the fixed frame 110.

[0075] After the first mating portion 131 and the second mating portion 132 are engaged, the first mating portion 131 and the second mating portion 132 can block the flow of air, reduce the leakage of air from the connection between the rotary frame 120 and the fixed frame 110, so that the air flows through the electrical components of the rotary frame 120 and then enters the second air chamber 112 through the ventilation holes 1221, improving the air utilization rate and ensuring the cooling effect. Optionally, the first mating portion 131 is circularly arranged, and the second mating portion 132 is also circularly arranged. In this way, on the one hand, it can ensure the smooth rotation of the rotary frame 120 and avoid interference between the first mating portion 131 and the second mating portion 132 when the rotary frame 120 rotates; on the other hand, it can ensure the sealing of the entire circumference of the connection between the rotary frame 120 and the fixed frame without dead corners, avoiding air leakage.

[0076] Optionally, the fixed frame 110 has a fixed portion 115 for rotatably mounting the rotary frame 120. And the second mating portion 132 of the rotary seal assembly 130 is disposed on the fixed portion 115. Optionally, the first mating portion 131 and the rotary frame 120 are of an integral structure, and the second mating portion 132 and the fixed portion 115 are of an integral structure, which can reduce the assembly process and facilitate use.

[0077] In one embodiment, the first mating portion 131 and the second mating portion 132 are a convex and concave fit. After the rotary frame 120 is rotatably installed on the rotary frame 120, the first mating portion 131 and the second mating portion 132 are fitted and installed by the convex being installed in the concave, thereby establishing a sealing relationship between the rotary frame 120 and the fixed frame 110. After the convex is installed in the concave, the convex is located in the gap between the rotary frame 120 and the fixed portion 115, and the convex and the outer wall of the concave can form a bent channel. When the air flows in the bent channel, due to the blocking effect of the convex and the inner wall of the bent channel, the leakage of air from the connection between the rotary frame 120 and the fixed frame 110 can be reduced.

[0078] Optionally, the first engaging portion 131 is a protrusion, and the second engaging portion 132 is a groove. Of course, in other embodiments of the present invention, the first engaging portion 131 may also be a groove, and the second engaging portion 132 may be a protrusion. Alternatively, the first engaging portion 131 and the second engaging portion 132 are in clearance fit. That is to say, there is a certain gap between the protrusion and the groove. In this way, the first engaging portion 131 can rotate relative to the second engaging portion 132, avoiding interference between the first engaging portion 131 and the second engaging portion 132 when the first engaging portion 131 rotates, and ensuring the smooth rotation of the rotating frame 120.

[0079] In one embodiment, both the first engaging portion 131 and the second engaging portion 132 are protrusions, and the first engaging portion 131 and the second engaging portion 132 are arranged in an interleaved manner. That is to say, the first engaging portion 131 protrudes from the surface of the rotating frame 120 facing the fixed portion 115, and the second engaging portion 132 protrudes from the surface of the fixed portion 115 facing the rotating frame 120. After the rotating frame 120 is rotatably connected to the fixed frame 110, the first engaging portion 131 and the second engaging portion 132 are arranged adjacent to each other. That is to say, the side surface of the first engaging portion 131 has the second engaging portion 132. In this way, the first engaging portion 131 and the second engaging portion 132 are interleaved in the gap between the rotating frame 120 and the fixed portion 115. At this time, the rotating frame 120, the first engaging portion 131, the second engaging portion 132, and the fixed portion 115 enclose a bent channel that is bent multiple times, which is a labyrinth structure. In this way, it can also prevent the flow of air between the rotating seal assemblies 130. Specifically, when the air flows in the labyrinth structure, due to the blocking effect of the inner wall of the labyrinth structure, the leakage of air from the connection between the rotating frame 120 and the fixed frame 110 can be reduced.

[0080] Optionally, the first engaging portion 131 may be located on the radial outer side, and the first engaging portion 131 is sleeved outside the second engaging portion 132; of course, the second engaging portion 132 may also be located on the radial outer side, and the second engaging portion 132 is sleeved outside the first engaging portion 131.

[0081] In one embodiment, the number of the first engaging portions 131 and the second engaging portions 132 is plural. The plurality of first engaging portions 131 are arranged at intervals in the radial direction of the rotating frame 120, and the plurality of second engaging portions 132 are respectively engaged with the corresponding first engaging portions 131. Specifically, the number of the first engaging portions 131 is plural, and the plurality of first engaging portions 131 are sleeved and arranged at intervals layer by layer. The number of the second engaging portions 132 is plural, and the plurality of second engaging portions 132 are sleeved and arranged at intervals layer by layer. The plurality of first engaging portions 131 and the second engaging portions 132 at the corresponding positions are arranged in a matching manner, so as to form a multi-stage sealing structure, ensure the sealing effect of the rotary sealing assembly 130 on the airflow, and reduce the airflow leakage. It can be understood that the outermost first engaging portion 131 and the outermost second engaging portion 132 are engaged to achieve a primary sealing effect. After the second outermost first engaging portion 131 and the second outermost second engaging portion 132 are engaged, the airflow can be further prevented from entering, achieving a secondary sealing effect; and so on.

[0082] Optionally, when the number of the first engaging portions 131 and the second engaging portions 132 is plural, the first engaging portions 131 and the second engaging portions 132 can be a matching structure of a protrusion and a groove, or a labyrinth structure formed by the intersection of a plurality of protrusions. The sealing principles of the above two forms have been mentioned above and will not be elaborated here one by one.

[0083] In one embodiment, the cross-sectional shape of the first engaging portion 131 is a polygon, an arc or other shapes, etc., and the shape of the second engaging portion 132 is consistent with the shape of the first engaging portion 131. Exemplarily, the cross-sectional shape of the first engaging portion 131 is a rectangular protrusion, and correspondingly, the cross-sectional shape of the second engaging portion 132 is a rectangular groove, and the first engaging portion 131 is installed in the second engaging portion 132.

[0084] See Figure 9 , in one embodiment, the frame structure 100 further includes a guiding member 170. The guiding member 170 is located in the first air chamber 111 and / or the second air chamber 112 and is arranged corresponding to the rotating frame 120. The guiding member 170 is used to convey and / or output airflow to the rotating frame 120. The guiding member 170 is used to guide the airflow to flow so that it can accurately flow into the rotating frame 120, ensuring that the airflow can cool the electrical components in the rotating frame 120.

[0085] Optionally, the guiding member 170 is arranged in the second air chamber 112, such as Figure 9As shown in the figure, the first air cavity 111 is an air outlet cavity, and the second air cavity 112 is an air inlet cavity. The guiding cavity can guide the air flow in the second air cavity 112 into the rotating frame 120. Of course, in other embodiments of the present invention, the guiding member 170 can also be disposed in the first air cavity 111, and its setting principle is substantially the same as that of the guiding member 170 disposed in the second air cavity 112, which will not be elaborated herein one by one.

[0086] Optionally, the guiding member 170 includes a plurality of plate bodies, and the plurality of plate bodies are spliced into a channel. One end of the channel is communicated with the second air inlet and outlet, and the other end of the channel is aligned with the rotating frame 120 for air flow, so as to transport the air flow to the rotating frame 120, avoid the air flow flowing to other areas, and improve the air flow utilization rate.

[0087] See Figure 1 and Figure 2 The present invention also provides a CT device, including electrical components and the frame structure 100 in the above embodiment. The electrical components at least include an X-ray tube and a detector. The X-ray tube and the detector are symmetrically disposed on the rotating frame 120 of the frame structure 100. The X-ray tube is used to emit X-rays, and the detector is used to receive X-rays. The X-ray tube can emit X-rays to the target area to be photographed, and the detector receives the X-rays passing through the target area to be photographed and processes the information of the X-rays to perform image imaging on the target area to be photographed, which is convenient for doctors to diagnose.

[0088] After the CT device of the present invention adopts the above-mentioned frame structure 100, the cooling of the electrical components on the rotating frame 120 can be realized, and the temperature in the fixed frame 110 can be reduced, so that the temperature field uniformity in the fixed frame 110 is good, and further the performance of the detector can be ensured to ensure the accuracy of the imaging result and facilitate the diagnosis of medical staff.

[0089] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0090] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A frame structure, characterized in that, Comprising: A housing; And A frame assembly disposed within the housing; the frame assembly includes a fixed frame and a rotating frame, the fixed frame having a first air chamber and a second air chamber formed by partitioning the housing in the axial direction; The rotating frame is rotatably mounted on the fixed frame, the rotating frame having ventilation holes that communicate the first air chamber and the second air chamber on both sides of the rotating frame; Wherein, the number of the ventilation holes is multiple, and the multiple ventilation holes are respectively installed at positions of electrical components on the rotating frame.

2. The frame structure according to claim 1, characterized in that, The rotating frame includes an annular cylinder and a mounting plate disposed on the annular cylinder, the annular cylinder being rotatably mounted on the fixed frame, and the ventilation holes penetrating the mounting plate in the axial direction; The fixed frame has a first air inlet / outlet communicating with the first air chamber, the first air inlet / outlet being used to realize the air flow interaction between the external environment and the first air chamber, and the first air inlet / outlet is disposed on the peripheral side or end face of the fixed frame; and / or, the fixed frame has a second air inlet / outlet communicating with the second air chamber, the second air inlet / outlet being used to realize the air flow interaction between the external environment and the second air chamber, and the second air inlet / outlet is disposed on the peripheral side or end face of the fixed frame.

3. The frame structure according to claim 1, characterized in that, The frame structure further includes an exhaust component, the exhaust component being disposed in the second air chamber in the axial direction, and the exhaust component being used to accelerate the air flow in the fixed frame.

4. The frame structure according to claim 1, wherein The fixed frame and the rotating frame enclose a wind guiding chamber, the wind guiding chamber being located between the rotating frame and the first air chamber and / or the second air chamber, and the wind guiding chamber communicating the ventilation holes with the first air chamber or the second air chamber.

5. The rack structure according to any one of claims 1 to 4, characterized in that, The frame structure further includes a partition plate, the housing covering the fixed frame, the partition plate being disposed in the housing and extending to the peripheral side surface of the fixed frame, and the partition plate being used to isolate the first air chamber and the second air chamber.

6. The frame structure according to any one of claims 1 to 4, characterized in that, The frame structure further includes a rotating sealing assembly, the rotating sealing assembly rotatably connecting the rotating frame and the fixed frame and sealing the connection between the rotating frame and the fixed frame.

7. The frame structure according to claim 6, characterized in that, The rotating sealing assembly includes a first mating portion and a second mating portion arranged in a ring shape, the first mating portion being disposed on the rotating frame, the second mating portion being disposed on the fixed frame, the first mating portion and the second mating portion being rotatably mating and sealing the rotating frame and the fixed frame.

8. The rack structure according to claim 7, wherein The first mating portion and the second mating portion are a mating of a protrusion and a groove; Or, both the first mating portion and the second mating portion are protrusions, and the first mating portion and the second mating portion are arranged alternately.

9. The rack structure according to claim 8, characterized in that, The number of the first mating portions and the second mating portions is multiple, the multiple first mating portions are spaced apart in the radial direction of the rotating frame, and the multiple second mating portions respectively mate with the corresponding first mating portions.

10. The frame structure according to any one of claims 1 to 4, characterized in that, The frame structure further includes a guiding member, the guiding member being located in the first air chamber and / or the second air chamber and corresponding to the rotating frame, and the guiding member being used to convey and / or output air flow to the rotating frame.

11. A CT device, characterized in that, Comprising electrical components and a frame structure as described in any one of claims 1 to 10, wherein the electrical components at least include an X-ray tube and a detector, the X-ray tube and the detector are symmetrically arranged on a rotating frame of the frame structure, the X-ray tube is used for emitting X-rays, and the detector is used for receiving the X-rays.

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